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संबंधित प्रश्न
At what frequency is AC supplied to residential houses?
An electric bulb is rated at 220 V, 100 W. What is its resistance?
Name the quantity whose unit is kilowatt?
An electric bulb is connected to a 220 V power supply line. If the bulb draws a current of 0.5 A, calculate the power of the bulb.
Calculate the cost of operating a heater of 500 W for 20 hours at the rate of Rs 3.90 per unit.
How much energy does a 100 W electric bulb transfer in 1 minute?
(a) 100 J
(b) 600 J
(c) 3600 J
(d) 6000 J
A current of 2 A is passed through a coil of resistance 75Ω for 2 minutes. (a) How much heat energy is produced? (b) How much charge is passed through the resistance?
What are the two main systems of wiring commonly used in houses? Which of these systems mentioned by you is better and why?
What would happen and why, to an electric bulb when it is connected across a supply of voltage (i) lower (ii) higher than its proper rating?
What is the function of the split rings in a d.c. motor?
